M41T00CAP is a serial access real-time clock (RTC) with integral backup battery and crystal.
The M41T00CAP is a low-power serial real-time clock (RTC) manufactured by STMicroelectronics. It features an integral backup battery and crystal within a 24-pin CAPHAT™ package, designed to sustain timekeeping for up to 10 years without system power. The device includes a 32.768 kHz oscillator and a built-in power sense circuit that automatically switches to the backup battery upon power failure.
| Power-fail deselect threshold | 2.6 V (typ) |
|---|---|
| Operating temperature | 0 to 70 °C |
| Battery backup duration | 10 years |
| Oscillator frequency | 32.768 kHz |
The internal lithium coin cell can sustain timekeeping operation for 10 years in the absence of system power.
Yes, corrections for the number of days in a month, including leap year, are made automatically up to the year 2100.